A pig’s kidney was just transplanted into a human. But Vox’s Dylan Matthews says we shouldn't need the pigs. This episode was produced by Victoria Chamberlin and Hady Mawajdeh, edited by Amina Al-Sadi, fact-checked by Anouk Dussaud, engineered by David Herman, and hosted by Sean Rameswaram. Transcript at vox.com/todayexplained Support Today, Explained by making a financial contribution to Vox! bit.ly/givepodcasts Learn more about your ad choices. Visit podcastchoices.com/adchoices